64-bit CPU

Lennart Sorensen lsorense-1wCw9BSqJbv44Nm34jS7GywD8/FfD2ys at public.gmane.org
Sun Sep 19 15:48:02 UTC 2004


On Sat, Sep 18, 2004 at 04:52:48PM -0400, jon.dmml-Re5JQEeQqe8AvxtiuMwx3w at public.gmane.org wrote:
> this might be a stupid question but... what is better? pentium 4 with
> hyperthreading or AMD64?

Better at what?

Some things favour the P4 architectures raw clock speeds of over 3GHz,
some favour the efficient instructions per clock that the amd can turn
out.

Based on benchmarks (synthetic and real) that I have seen, the amd64
tends to just outrun the P4 (top of each model range) on most things in
32bit mode, and the amd64 tends to be quite a bit faster when in 64bit
mode, although not much 64bit software is around to test with yet.

An Athlon64 vs Pentium-M would be a more fair comparison.

Lennart Sorensen
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